紫外法测定苯扎溴铵消毒液中亚硝酸钠的含量

Determination of sodium nitrite in benzalkonium bromide solution for disinfection

提要 目的:建立苯扎溴铵消毒液中亚硝酸钠的含量测定方法。方法:测定波长为354nm,溶剂为水。结果:在0.4mg/ml～2.4mg/ml范围内,亚硝酸钠的浓度与吸光度线性关系良好。平均回收率为99.8%,RSD为0.4%。结论:紫外分光光度法可准确测定苯扎溴铵消毒液中亚硝酸钠的含量。

Objective: To establish the determination of sodium nitrite in benzalkonium bromide solution for disinfection. Methods: The sodium nitrite was determined at 354 nm with water solution. Results: The concentration of sodium nitrite to UV absorption was linear between 0.4 mg/ml to 2.4 mg/ml. The average recovery was 99.8% with RSD 0.4%. Conclusion: The UV spectrophotometry is accurate for the determination of sodium nitrite in benzalkonium bromide solution for disinfection.